人教版英語必修3第四單元閱讀1課件-全文預(yù)覽
【正文】 What other puzzles are hidden in the passage? on P27 How does the universe(earth) form? Why did the earth cool down? Why did water disappear on other pla? How did the dinosaur disappear ? summary ? After the “big bang”, the earth was still just a cloud of _______,it _______loudly with fire and rock, which were _____ to produce the_________, water vapour and other gases. Then ________ began to appeared on the earth. dust exploded in time carbon water ____________ in water are considered to be the earliest lives on the earth. The O2 they supplied encouraged the lives of____ __________. Slowly green plants grew on land, which were followed by __________ like insects amp。 ________. When the plants grew into______, ______ appeared. Then _______ developed but disappeared later, which made the rise of a totally different animal,______, possible, and finally _____ spread all over the world. shell fish and fish amphibians forests reptilesdinosaurs mammal humans The small plants land animals Main Body Paragraph 1: Paragraph 2: Paragraph 3: Paragraph 4: Paragraph 5: A widely accepted theory about the formation of the universe The formation of the earth The importance of water for life The development of plants and animals on the earth The arrival of humans and their impact on the earth To seek key words 1. Because water and life remained on the earth. 2. Because plants provided oxygen for animals to breathe. 3. Because dinosaurs died out long before human bei
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